Lock-nut.



J. M. MARCH, DEGD.

M. MARCH, ADMINISTEATEIX.

I LOOK NUT. APPLICATION FILED JULY 29, 1913.

1,092,155. Patented Apr. 7, 1914.

10 iii WITNESSES INVENTOR W 4/ hmdhudm @Q ATTO RN E Y ating nut element.

TTED @TATES A i i T @FFTQF...

JACOB 1V1. MARCH, DECEASED, LATE OF SPRING CITY BOROUGH, PENNSYLVANIA,BY MAUD MARCH, ADMINISTRATBIX, OF NEW YOB-K, N. Y.

LOCK-NUT.

roearas.

Specification of Letters Patent.

Patented Apr. 7, 1914.

To all whom it may concern Be it known that JAooB M. MARCH, late acitizen of the United States, residing in the borough of Spring City,county of Chester, State of Pennsylvania, did'invent new and usefulImprovements in Lock-Nuts, of which the following is a specification.

The invention relates to improvements in look nuts.

The object of the invention is to provide improved means for locking twocooperating nut elements together and also for locking said nut elementsand an adjacent body to prevent relative movement therebetween.

Referring to the drawings, which illustrate merely by way of example, asuitable or one form of embodiment of my invention, Figure 1 is aperspective view of one cooper- Fig. 2 is a perspective view of theother cooperating nut element. Fig. 3 is a sectional view of the twocooperating nut elements in operative position upon a bolt and againstan adjacent body; the section being in a plane corresponding to the line3-8 of Figs. 1 and 2. Fig. 4 is a perspective view of the elements inoperative or locked relationship with parts broken away to show therelation of pin and ball.

Similar numerals refer to similar parts throughout the several views.

The lock nuts comprise twocooperating elements 8 and 9. The nut element8 is provided with the annular groove 10 surrounding the threadedopening 13 and on its face adjacent the nut element 9. A. hardened ball11 is secured in a recess or pocket 12 sunk below the bottom of groove10 and secured therein by bringing the metal slightly over its greaterperiphery. The ball is however free to turn in the pocket and projectsslightly above the bottom of the groove.

The nut element 9 is provided with an aperture or a number of apertures14 extending parallel with and surrounding, where there are a number,the threaded opening 15.

the two nut elements are brought into coiiperative relationship.

In operation, for an example, the nut element 9 is threaded on thethreaded end 19 of the rod, bar or bolt, which I have shown rojectingthrough the body 20. The nut element 9 is turned down on the threadedportion 19 until it comes into engagement with the body 20, preferablyinto tight engagement therewith. The pin 16 is then inserted 1n any oneof the holes 14 which may be most suitable with respect to theconditions of the body 20 or of adjacent parts. A sharp tap with ahammer is given the head 18 to drive the point 17 into body 20. Thisprevents any turning of nut element 9 with respect to body portion 20.The cooperating nut element 8 is then threaded down on the threadedportion 19 until it engages with the element 9. The mark 21 on the upperface of element 8 indicates the position of the ball 11. This is notedwhen the two nut elements approach each other. The nut element 8 is thenraised or moved away from element 9 and the pin 16 placed in the hole 14with which the ball 11 was adjacent when the nuts were together. The nutelement 8 is now returned to the cooperative position on threadedportion 19 until the ball 11 encounters the head 18 of pin 16. Aforcible twist of nut element 8 now carries the ball 11 over the head18. The ball 11 thus forms a detent with head 18 and the parts arelocked securely together and will not become accidentally disengaged.That is to say, the ball 11 can only be carried back over the head 18 ofpin 16, by considerable force exerted by a wrench or similar tool, inorder to disengage the nuts. It also follows that the two nut elements 8and 9 cannot turn together on threaded portion 19 away from the body 20because of the engagement of the point 17 of pin 16 into body 20 asabove described.

What I claim is 1. A look nut comprising cooperating nut A pin 16 ofhardened metal is adapted to project through one of the openings 14having an especially hardened point 17. The holes 14 are so located onnut element 9 that the head 18 of the pin in whatever hole it may beplaced, will register with the annular channel .10 of nut element 8.That is, the head 18 will project into channel 10 when elements, one ofsaid elements having a hole or recess and a pin therein having ahardened point adapted to be driven into an adjacent body to lock thenut therewith, the other nut element having a detent as means forcausing locking engagement with the pm.

2. A look nut comprising cooperating nut elements, one of said elementshaving a hole and a pin therein adapted to engage an adj acent body,said pin having a projecting head and the other nut element having anannular channel adapted to receive the projecting head and a ballpartially sunk in the channel for engaging said projecting head as meansfor locking the two nut elements and the adjacent body. 7

3. In combination with an adjacent body, a nut having a headed pinprojecting there- 'through for engaging the adjacentbody, a

7 second nut having an annular channel in its cooperating face forreceiving the head of the pin, and a hardened ball secured Within thechannel for cooperating With thehead of the pin as means for locking thenut elements With the adjacent body.

4. Cooperating nut elements, one element having a ball loosely securedand partially sunk below. the cooperating faoe thereof, the otherelement having a pin projecting there through for engaging an adjacentbody, and a head on its cooperating face for engaging and looking withthe ball.

- MAUD Manon, Aclministratflx of the estate of Jacob M.

March, deceased.

. Witnesses:

GERTRUDE K. COLBY, JESSE T. WILLIAMS.

Gopies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. 0.

